Mercurial > hg
annotate mercurial/posix.py @ 46858:85e3a630cad9
revlog: move the details of revlog "v2" index inside revlog.utils.constants
the revlog module is quite large and this kind of format information would handy
for other module. So let us start to gather this information about the format in
a more appropriate place.
We update various reference to this information to use the new "source of truth"
in the process.
Differential Revision: https://phab.mercurial-scm.org/D10305
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Mon, 05 Apr 2021 12:21:12 +0200 |
parents | d4ba4d51f85f |
children | 5b3513177f2b |
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1 # posix.py - Posix utility function implementations for Mercurial |
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2 # |
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3 # Copyright 2005-2009 Olivia Mackall <olivia@selenic.com> and others |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
10263 | 6 # GNU General Public License version 2 or any later version. |
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7 |
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8 from __future__ import absolute_import |
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9 |
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10 import errno |
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11 import fcntl |
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12 import getpass |
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13 import grp |
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14 import os |
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15 import pwd |
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16 import re |
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17 import select |
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18 import stat |
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19 import sys |
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20 import tempfile |
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21 import unicodedata |
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22 |
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23 from .i18n import _ |
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24 from .pycompat import ( |
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25 getattr, |
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26 open, |
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27 ) |
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28 from . import ( |
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29 encoding, |
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30 error, |
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31 policy, |
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32 pycompat, |
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33 ) |
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34 |
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35 osutil = policy.importmod('osutil') |
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36 |
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37 normpath = os.path.normpath |
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38 samestat = os.path.samestat |
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39 try: |
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40 oslink = os.link |
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41 except AttributeError: |
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42 # Some platforms build Python without os.link on systems that are |
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43 # vaguely unix-like but don't have hardlink support. For those |
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44 # poor souls, just say we tried and that it failed so we fall back |
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45 # to copies. |
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46 def oslink(src, dst): |
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47 raise OSError( |
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48 errno.EINVAL, b'hardlinks not supported: %s to %s' % (src, dst) |
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49 ) |
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50 |
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51 |
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52 readlink = os.readlink |
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53 unlink = os.unlink |
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54 rename = os.rename |
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55 removedirs = os.removedirs |
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56 expandglobs = False |
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57 |
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58 umask = os.umask(0) |
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59 os.umask(umask) |
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60 |
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61 if not pycompat.ispy3: |
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62 |
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63 def posixfile(name, mode='r', buffering=-1): |
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64 fp = open(name, mode=mode, buffering=buffering) |
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65 # The position when opening in append mode is implementation defined, so |
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66 # make it consistent by always seeking to the end. |
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67 if 'a' in mode: |
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68 fp.seek(0, os.SEEK_END) |
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69 return fp |
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70 |
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71 |
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72 else: |
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73 # The underlying file object seeks as required in Python 3: |
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74 # https://github.com/python/cpython/blob/v3.7.3/Modules/_io/fileio.c#L474 |
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75 posixfile = open |
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76 |
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77 |
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78 def split(p): |
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79 """Same as posixpath.split, but faster |
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80 |
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81 >>> import posixpath |
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82 >>> for f in [b'/absolute/path/to/file', |
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83 ... b'relative/path/to/file', |
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84 ... b'file_alone', |
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85 ... b'path/to/directory/', |
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86 ... b'/multiple/path//separators', |
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87 ... b'/file_at_root', |
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88 ... b'///multiple_leading_separators_at_root', |
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89 ... b'']: |
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90 ... assert split(f) == posixpath.split(f), f |
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91 """ |
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92 ht = p.rsplit(b'/', 1) |
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93 if len(ht) == 1: |
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94 return b'', p |
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95 nh = ht[0].rstrip(b'/') |
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96 if nh: |
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97 return nh, ht[1] |
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98 return ht[0] + b'/', ht[1] |
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99 |
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100 |
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101 def openhardlinks(): |
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102 '''return true if it is safe to hold open file handles to hardlinks''' |
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103 return True |
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104 |
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105 |
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106 def nlinks(name): |
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107 '''return number of hardlinks for the given file''' |
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108 return os.lstat(name).st_nlink |
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109 |
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110 |
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111 def parsepatchoutput(output_line): |
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112 """parses the output produced by patch and returns the filename""" |
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113 pf = output_line[14:] |
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114 if pycompat.sysplatform == b'OpenVMS': |
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115 if pf[0] == b'`': |
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116 pf = pf[1:-1] # Remove the quotes |
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117 else: |
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118 if pf.startswith(b"'") and pf.endswith(b"'") and b" " in pf: |
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119 pf = pf[1:-1] # Remove the quotes |
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120 return pf |
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121 |
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122 |
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123 def sshargs(sshcmd, host, user, port): |
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124 '''Build argument list for ssh''' |
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125 args = user and (b"%s@%s" % (user, host)) or host |
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126 if b'-' in args[:1]: |
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127 raise error.Abort( |
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128 _(b'illegal ssh hostname or username starting with -: %s') % args |
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129 ) |
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130 args = shellquote(args) |
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131 if port: |
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132 args = b'-p %s %s' % (shellquote(port), args) |
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133 return args |
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134 |
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135 |
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136 def isexec(f): |
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137 """check whether a file is executable""" |
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138 return os.lstat(f).st_mode & 0o100 != 0 |
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139 |
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140 |
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141 def setflags(f, l, x): |
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142 st = os.lstat(f) |
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143 s = st.st_mode |
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144 if l: |
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145 if not stat.S_ISLNK(s): |
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146 # switch file to link |
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147 with open(f, b'rb') as fp: |
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148 data = fp.read() |
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149 unlink(f) |
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150 try: |
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151 os.symlink(data, f) |
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152 except OSError: |
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153 # failed to make a link, rewrite file |
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154 with open(f, b"wb") as fp: |
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155 fp.write(data) |
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156 |
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157 # no chmod needed at this point |
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158 return |
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159 if stat.S_ISLNK(s): |
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160 # switch link to file |
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161 data = os.readlink(f) |
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162 unlink(f) |
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163 with open(f, b"wb") as fp: |
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164 fp.write(data) |
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165 s = 0o666 & ~umask # avoid restatting for chmod |
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166 |
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167 sx = s & 0o100 |
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168 if st.st_nlink > 1 and bool(x) != bool(sx): |
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169 # the file is a hardlink, break it |
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170 with open(f, b"rb") as fp: |
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171 data = fp.read() |
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172 unlink(f) |
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173 with open(f, b"wb") as fp: |
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174 fp.write(data) |
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175 |
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176 if x and not sx: |
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177 # Turn on +x for every +r bit when making a file executable |
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178 # and obey umask. |
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179 os.chmod(f, s | (s & 0o444) >> 2 & ~umask) |
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180 elif not x and sx: |
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181 # Turn off all +x bits |
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182 os.chmod(f, s & 0o666) |
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183 |
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184 |
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185 def copymode(src, dst, mode=None, enforcewritable=False): |
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186 """Copy the file mode from the file at path src to dst. |
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187 If src doesn't exist, we're using mode instead. If mode is None, we're |
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188 using umask.""" |
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189 try: |
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190 st_mode = os.lstat(src).st_mode & 0o777 |
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191 except OSError as inst: |
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192 if inst.errno != errno.ENOENT: |
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193 raise |
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194 st_mode = mode |
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195 if st_mode is None: |
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196 st_mode = ~umask |
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197 st_mode &= 0o666 |
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198 |
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199 new_mode = st_mode |
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200 |
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201 if enforcewritable: |
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202 new_mode |= stat.S_IWUSR |
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203 |
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204 os.chmod(dst, new_mode) |
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205 |
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206 |
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207 def checkexec(path): |
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208 """ |
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209 Check whether the given path is on a filesystem with UNIX-like exec flags |
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210 |
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211 Requires a directory (like /foo/.hg) |
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212 """ |
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213 |
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214 # VFAT on some Linux versions can flip mode but it doesn't persist |
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215 # a FS remount. Frequently we can detect it if files are created |
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216 # with exec bit on. |
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217 |
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218 try: |
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219 EXECFLAGS = stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH |
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220 basedir = os.path.join(path, b'.hg') |
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221 cachedir = os.path.join(basedir, b'wcache') |
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222 storedir = os.path.join(basedir, b'store') |
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223 if not os.path.exists(cachedir): |
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224 try: |
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225 # we want to create the 'cache' directory, not the '.hg' one. |
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226 # Automatically creating '.hg' directory could silently spawn |
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227 # invalid Mercurial repositories. That seems like a bad idea. |
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228 os.mkdir(cachedir) |
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229 if os.path.exists(storedir): |
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230 copymode(storedir, cachedir) |
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231 else: |
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232 copymode(basedir, cachedir) |
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233 except (IOError, OSError): |
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234 # we other fallback logic triggers |
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235 pass |
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236 if os.path.isdir(cachedir): |
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237 checkisexec = os.path.join(cachedir, b'checkisexec') |
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238 checknoexec = os.path.join(cachedir, b'checknoexec') |
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239 |
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240 try: |
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241 m = os.stat(checkisexec).st_mode |
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242 except OSError as e: |
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243 if e.errno != errno.ENOENT: |
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244 raise |
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245 # checkisexec does not exist - fall through ... |
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246 else: |
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247 # checkisexec exists, check if it actually is exec |
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248 if m & EXECFLAGS != 0: |
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249 # ensure checkisexec exists, check it isn't exec |
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250 try: |
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251 m = os.stat(checknoexec).st_mode |
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252 except OSError as e: |
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253 if e.errno != errno.ENOENT: |
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254 raise |
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255 open(checknoexec, b'w').close() # might fail |
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256 m = os.stat(checknoexec).st_mode |
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257 if m & EXECFLAGS == 0: |
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258 # check-exec is exec and check-no-exec is not exec |
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259 return True |
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260 # checknoexec exists but is exec - delete it |
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261 unlink(checknoexec) |
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262 # checkisexec exists but is not exec - delete it |
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263 unlink(checkisexec) |
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264 |
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265 # check using one file, leave it as checkisexec |
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266 checkdir = cachedir |
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267 else: |
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268 # check directly in path and don't leave checkisexec behind |
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269 checkdir = path |
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270 checkisexec = None |
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271 fh, fn = pycompat.mkstemp(dir=checkdir, prefix=b'hg-checkexec-') |
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272 try: |
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273 os.close(fh) |
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274 m = os.stat(fn).st_mode |
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275 if m & EXECFLAGS == 0: |
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276 os.chmod(fn, m & 0o777 | EXECFLAGS) |
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277 if os.stat(fn).st_mode & EXECFLAGS != 0: |
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278 if checkisexec is not None: |
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279 os.rename(fn, checkisexec) |
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280 fn = None |
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281 return True |
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282 finally: |
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283 if fn is not None: |
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284 unlink(fn) |
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285 except (IOError, OSError): |
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286 # we don't care, the user probably won't be able to commit anyway |
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287 return False |
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288 |
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289 |
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290 def checklink(path): |
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291 """check whether the given path is on a symlink-capable filesystem""" |
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292 # mktemp is not racy because symlink creation will fail if the |
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293 # file already exists |
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294 while True: |
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295 cachedir = os.path.join(path, b'.hg', b'wcache') |
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296 checklink = os.path.join(cachedir, b'checklink') |
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297 # try fast path, read only |
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298 if os.path.islink(checklink): |
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299 return True |
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300 if os.path.isdir(cachedir): |
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301 checkdir = cachedir |
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302 else: |
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303 checkdir = path |
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304 cachedir = None |
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305 name = tempfile.mktemp( |
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306 dir=pycompat.fsdecode(checkdir), prefix=r'checklink-' |
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307 ) |
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308 name = pycompat.fsencode(name) |
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309 try: |
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310 fd = None |
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311 if cachedir is None: |
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312 fd = pycompat.namedtempfile( |
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313 dir=checkdir, prefix=b'hg-checklink-' |
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314 ) |
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315 target = os.path.basename(fd.name) |
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316 else: |
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317 # create a fixed file to link to; doesn't matter if it |
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318 # already exists. |
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319 target = b'checklink-target' |
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320 try: |
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321 fullpath = os.path.join(cachedir, target) |
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322 open(fullpath, b'w').close() |
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323 except IOError as inst: |
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324 # pytype: disable=unsupported-operands |
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325 if inst[0] == errno.EACCES: |
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326 # pytype: enable=unsupported-operands |
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327 |
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328 # If we can't write to cachedir, just pretend |
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329 # that the fs is readonly and by association |
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330 # that the fs won't support symlinks. This |
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331 # seems like the least dangerous way to avoid |
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332 # data loss. |
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333 return False |
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334 raise |
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335 try: |
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336 os.symlink(target, name) |
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337 if cachedir is None: |
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338 unlink(name) |
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339 else: |
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340 try: |
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341 os.rename(name, checklink) |
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342 except OSError: |
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343 unlink(name) |
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344 return True |
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345 except OSError as inst: |
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346 # link creation might race, try again |
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347 if inst.errno == errno.EEXIST: |
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348 continue |
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349 raise |
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350 finally: |
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351 if fd is not None: |
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352 fd.close() |
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353 except AttributeError: |
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354 return False |
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355 except OSError as inst: |
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356 # sshfs might report failure while successfully creating the link |
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357 if inst.errno == errno.EIO and os.path.exists(name): |
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358 unlink(name) |
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359 return False |
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360 |
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361 |
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362 def checkosfilename(path): |
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363 """Check that the base-relative path is a valid filename on this platform. |
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364 Returns None if the path is ok, or a UI string describing the problem.""" |
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365 return None # on posix platforms, every path is ok |
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366 |
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367 |
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368 def getfsmountpoint(dirpath): |
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369 """Get the filesystem mount point from a directory (best-effort) |
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370 |
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371 Returns None if we are unsure. Raises OSError on ENOENT, EPERM, etc. |
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372 """ |
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373 return getattr(osutil, 'getfsmountpoint', lambda x: None)(dirpath) |
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374 |
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375 |
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376 def getfstype(dirpath): |
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377 """Get the filesystem type name from a directory (best-effort) |
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378 |
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379 Returns None if we are unsure. Raises OSError on ENOENT, EPERM, etc. |
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380 """ |
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381 return getattr(osutil, 'getfstype', lambda x: None)(dirpath) |
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382 |
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383 |
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384 def setbinary(fd): |
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385 pass |
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386 |
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387 |
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388 def pconvert(path): |
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389 return path |
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390 |
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391 |
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392 def localpath(path): |
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|
393 return path |
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394 |
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395 |
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396 def samefile(fpath1, fpath2): |
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397 """Returns whether path1 and path2 refer to the same file. This is only |
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398 guaranteed to work for files, not directories.""" |
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399 return os.path.samefile(fpath1, fpath2) |
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400 |
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401 |
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402 def samedevice(fpath1, fpath2): |
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403 """Returns whether fpath1 and fpath2 are on the same device. This is only |
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|
404 guaranteed to work for files, not directories.""" |
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405 st1 = os.lstat(fpath1) |
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406 st2 = os.lstat(fpath2) |
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407 return st1.st_dev == st2.st_dev |
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408 |
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409 |
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|
410 # os.path.normcase is a no-op, which doesn't help us on non-native filesystems |
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411 def normcase(path): |
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|
412 return path.lower() |
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|
413 |
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414 |
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|
415 # what normcase does to ASCII strings |
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416 normcasespec = encoding.normcasespecs.lower |
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417 # fallback normcase function for non-ASCII strings |
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418 normcasefallback = normcase |
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|
419 |
34647 | 420 if pycompat.isdarwin: |
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421 |
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422 def normcase(path): |
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423 """ |
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424 Normalize a filename for OS X-compatible comparison: |
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|
425 - escape-encode invalid characters |
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|
426 - decompose to NFD |
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|
427 - lowercase |
23597
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darwin: omit ignorable codepoints when normcase()ing a file path
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|
428 - omit ignored characters [200c-200f, 202a-202e, 206a-206f,feff] |
19131
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|
429 |
34131
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doctest: bulk-replace string literals with b'' for Python 3
Yuya Nishihara <yuya@tcha.org>
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changeset
|
430 >>> normcase(b'UPPER') |
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|
431 'upper' |
34199
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|
432 >>> normcase(b'Caf\\xc3\\xa9') |
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|
433 'cafe\\xcc\\x81' |
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|
434 >>> normcase(b'\\xc3\\x89') |
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|
435 'e\\xcc\\x81' |
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|
436 >>> normcase(b'\\xb8\\xca\\xc3\\xca\\xbe\\xc8.JPG') # issue3918 |
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|
437 '%b8%ca%c3\\xca\\xbe%c8.jpg' |
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|
438 """ |
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|
439 |
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|
440 try: |
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|
441 return encoding.asciilower(path) # exception for non-ASCII |
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|
442 except UnicodeDecodeError: |
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|
443 return normcasefallback(path) |
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|
444 |
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|
445 normcasespec = encoding.normcasespecs.lower |
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|
446 |
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|
447 def normcasefallback(path): |
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|
448 try: |
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|
449 u = path.decode('utf-8') |
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450 except UnicodeDecodeError: |
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451 # OS X percent-encodes any bytes that aren't valid utf-8 |
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452 s = b'' |
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|
453 pos = 0 |
27380
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|
454 l = len(path) |
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455 while pos < l: |
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|
456 try: |
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|
457 c = encoding.getutf8char(path, pos) |
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|
458 pos += len(c) |
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459 except ValueError: |
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460 c = b'%%%02X' % ord(path[pos : pos + 1]) |
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461 pos += 1 |
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462 s += c |
19131
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463 |
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464 u = s.decode('utf-8') |
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465 |
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466 # Decompose then lowercase (HFS+ technote specifies lower) |
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467 enc = unicodedata.normalize('NFD', u).lower().encode('utf-8') |
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darwin: omit ignorable codepoints when normcase()ing a file path
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parents:
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|
468 # drop HFS+ ignored characters |
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darwin: omit ignorable codepoints when normcase()ing a file path
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parents:
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469 return encoding.hfsignoreclean(enc) |
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470 |
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471 |
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472 if pycompat.sysplatform == b'cygwin': |
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473 # workaround for cygwin, in which mount point part of path is |
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474 # treated as case sensitive, even though underlying NTFS is case |
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475 # insensitive. |
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476 |
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|
477 # default mount points |
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478 cygwinmountpoints = sorted( |
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479 [ |
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480 b"/usr/bin", |
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481 b"/usr/lib", |
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482 b"/cygdrive", |
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483 ], |
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484 reverse=True, |
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485 ) |
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486 |
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487 # use upper-ing as normcase as same as NTFS workaround |
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488 def normcase(path): |
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489 pathlen = len(path) |
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parents:
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|
490 if (pathlen == 0) or (path[0] != pycompat.ossep): |
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491 # treat as relative |
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492 return encoding.upper(path) |
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|
493 |
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|
494 # to preserve case of mountpoint part |
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parents:
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495 for mp in cygwinmountpoints: |
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496 if not path.startswith(mp): |
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|
497 continue |
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498 |
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|
499 mplen = len(mp) |
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500 if mplen == pathlen: # mount point itself |
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501 return mp |
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parents:
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502 if path[mplen] == pycompat.ossep: |
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503 return mp + encoding.upper(path[mplen:]) |
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504 |
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|
505 return encoding.upper(path) |
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|
506 |
24596
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cygwin: define normcase spec and fallback
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parents:
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diff
changeset
|
507 normcasespec = encoding.normcasespecs.other |
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parents:
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|
508 normcasefallback = normcase |
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parents:
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|
509 |
16240
95e45abe7e8e
posix: ignore execution bit in cygwin (issue3301)
A. S. Budden <abudden@gmail.com>
parents:
15791
diff
changeset
|
510 # Cygwin translates native ACLs to POSIX permissions, |
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|
511 # but these translations are not supported by native |
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|
512 # tools, so the exec bit tends to be set erroneously. |
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parents:
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|
513 # Therefore, disable executable bit access on Cygwin. |
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|
514 def checkexec(path): |
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|
515 return False |
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parents:
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diff
changeset
|
516 |
16241
60cc3a0d2249
posix: disable cygwin's symlink emulation
Matt Mackall <mpm@selenic.com>
parents:
16240
diff
changeset
|
517 # Similarly, Cygwin's symlink emulation is likely to create |
60cc3a0d2249
posix: disable cygwin's symlink emulation
Matt Mackall <mpm@selenic.com>
parents:
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diff
changeset
|
518 # problems when Mercurial is used from both Cygwin and native |
60cc3a0d2249
posix: disable cygwin's symlink emulation
Matt Mackall <mpm@selenic.com>
parents:
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changeset
|
519 # Windows, with other native tools, or on shared volumes |
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Matt Mackall <mpm@selenic.com>
parents:
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diff
changeset
|
520 def checklink(path): |
60cc3a0d2249
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parents:
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diff
changeset
|
521 return False |
60cc3a0d2249
posix: disable cygwin's symlink emulation
Matt Mackall <mpm@selenic.com>
parents:
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diff
changeset
|
522 |
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|
523 |
23683
5edb387158a1
posix: quote the specified string only when it may have to be quoted
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
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changeset
|
524 _needsshellquote = None |
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|
525 |
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changeset
|
526 |
7890
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
527 def shellquote(s): |
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|
528 if pycompat.sysplatform == b'OpenVMS': |
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|
529 return b'"%s"' % s |
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parents:
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|
530 global _needsshellquote |
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parents:
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|
531 if _needsshellquote is None: |
31491
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py3: make the regular expression bytes to prevent TypeError
Pulkit Goyal <7895pulkit@gmail.com>
parents:
30697
diff
changeset
|
532 _needsshellquote = re.compile(br'[^a-zA-Z0-9._/+-]').search |
24108
d65ecb814fc0
shellquote: fix missing quotes for empty string
Yuya Nishihara <yuya@tcha.org>
parents:
23683
diff
changeset
|
533 if s and not _needsshellquote(s): |
23683
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parents:
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diff
changeset
|
534 # "s" shouldn't have to be quoted |
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parents:
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|
535 return s |
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
536 else: |
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|
537 return b"'%s'" % s.replace(b"'", b"'\\''") |
7890
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parents:
diff
changeset
|
538 |
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|
539 |
36415
0cb09c322647
util: factor out shellsplit() function
Yuya Nishihara <yuya@tcha.org>
parents:
36303
diff
changeset
|
540 def shellsplit(s): |
0cb09c322647
util: factor out shellsplit() function
Yuya Nishihara <yuya@tcha.org>
parents:
36303
diff
changeset
|
541 """Parse a command string in POSIX shell way (best-effort)""" |
0cb09c322647
util: factor out shellsplit() function
Yuya Nishihara <yuya@tcha.org>
parents:
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diff
changeset
|
542 return pycompat.shlexsplit(s, posix=True) |
0cb09c322647
util: factor out shellsplit() function
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parents:
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changeset
|
543 |
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|
544 |
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parents:
diff
changeset
|
545 def testpid(pid): |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
546 '''return False if pid dead, True if running or not sure''' |
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|
547 if pycompat.sysplatform == b'OpenVMS': |
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
548 return True |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
549 try: |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
550 os.kill(pid, 0) |
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
551 return True |
25660
328739ea70c3
global: mass rewrite to use modern exception syntax
Gregory Szorc <gregory.szorc@gmail.com>
parents:
25658
diff
changeset
|
552 except OSError as inst: |
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Matt Mackall <mpm@selenic.com>
parents:
diff
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|
553 return inst.errno != errno.ESRCH |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
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|
554 |
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|
555 |
8657
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Martin Geisler <mg@lazybytes.net>
parents:
8614
diff
changeset
|
556 def isowner(st): |
3fa92c618624
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Martin Geisler <mg@lazybytes.net>
parents:
8614
diff
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|
557 """Return True if the stat object st is from the current user.""" |
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Matt Mackall <mpm@selenic.com>
parents:
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|
558 return st.st_uid == os.getuid() |
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Matt Mackall <mpm@selenic.com>
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|
559 |
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|
560 |
14271
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Adrian Buehlmann <adrian@cadifra.com>
parents:
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|
561 def findexe(command): |
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|
562 """Find executable for command searching like which does. |
7890
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parents:
diff
changeset
|
563 If command is a basename then PATH is searched for command. |
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
564 PATH isn't searched if command is an absolute or relative path. |
45942
89a2afe31e82
formating: upgrade to black 20.8b1
Augie Fackler <raf@durin42.com>
parents:
45718
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|
565 If command isn't found None is returned.""" |
43077
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formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
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diff
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|
566 if pycompat.sysplatform == b'OpenVMS': |
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
567 return command |
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
568 |
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
569 def findexisting(executable): |
43077
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formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
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diff
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|
570 b'Will return executable if existing file' |
15499
58f96703a9ab
posix: fix findexe() to check for file type and access
Marc-Antoine Ruel <maruel@google.com>
parents:
15488
diff
changeset
|
571 if os.path.isfile(executable) and os.access(executable, os.X_OK): |
7890
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util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
572 return executable |
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util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
573 return None |
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
574 |
30614
cfe66dcf45c0
py3: replace os.sep with pycompat.ossep (part 2 of 4)
Pulkit Goyal <7895pulkit@gmail.com>
parents:
30612
diff
changeset
|
575 if pycompat.ossep in command: |
7890
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util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
576 return findexisting(command) |
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
577 |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
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changeset
|
578 if pycompat.sysplatform == b'plan9': |
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
579 return findexisting(os.path.join(b'/bin', command)) |
16383
f5dd179bfa4a
plan9: initial support for plan 9 from bell labs
Steven Stallion <sstallion@gmail.com>
parents:
16241
diff
changeset
|
580 |
43077
687b865b95ad
formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents:
43076
diff
changeset
|
581 for path in encoding.environ.get(b'PATH', b'').split(pycompat.ospathsep): |
7890
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util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
582 executable = findexisting(os.path.join(path, command)) |
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
583 if executable is not None: |
15499
58f96703a9ab
posix: fix findexe() to check for file type and access
Marc-Antoine Ruel <maruel@google.com>
parents:
15488
diff
changeset
|
584 return executable |
7890
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
585 return None |
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
586 |
43076
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formatting: blacken the codebase
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parents:
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diff
changeset
|
587 |
14237
4d684d8210a1
rename util.set_signal_handler to setsignalhandler
Adrian Buehlmann <adrian@cadifra.com>
parents:
14235
diff
changeset
|
588 def setsignalhandler(): |
7890
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
589 pass |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
590 |
43076
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Augie Fackler <augie@google.com>
parents:
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diff
changeset
|
591 |
32291
bd872f64a8ba
cleanup: use set literals
Martin von Zweigbergk <martinvonz@google.com>
parents:
32129
diff
changeset
|
592 _wantedkinds = {stat.S_IFREG, stat.S_IFLNK} |
18017
74912fe3d718
dirstate: move file type filtering to its source
Bryan O'Sullivan <bryano@fb.com>
parents:
17560
diff
changeset
|
593 |
43076
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Augie Fackler <augie@google.com>
parents:
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diff
changeset
|
594 |
7890
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util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
595 def statfiles(files): |
45942
89a2afe31e82
formating: upgrade to black 20.8b1
Augie Fackler <raf@durin42.com>
parents:
45718
diff
changeset
|
596 """Stat each file in files. Yield each stat, or None if a file does not |
89a2afe31e82
formating: upgrade to black 20.8b1
Augie Fackler <raf@durin42.com>
parents:
45718
diff
changeset
|
597 exist or has a type we don't care about.""" |
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
598 lstat = os.lstat |
18017
74912fe3d718
dirstate: move file type filtering to its source
Bryan O'Sullivan <bryano@fb.com>
parents:
17560
diff
changeset
|
599 getkind = stat.S_IFMT |
7890
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
600 for nf in files: |
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
601 try: |
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
602 st = lstat(nf) |
18017
74912fe3d718
dirstate: move file type filtering to its source
Bryan O'Sullivan <bryano@fb.com>
parents:
17560
diff
changeset
|
603 if getkind(st.st_mode) not in _wantedkinds: |
74912fe3d718
dirstate: move file type filtering to its source
Bryan O'Sullivan <bryano@fb.com>
parents:
17560
diff
changeset
|
604 st = None |
25660
328739ea70c3
global: mass rewrite to use modern exception syntax
Gregory Szorc <gregory.szorc@gmail.com>
parents:
25658
diff
changeset
|
605 except OSError as err: |
7890
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
606 if err.errno not in (errno.ENOENT, errno.ENOTDIR): |
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
607 raise |
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
608 st = None |
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
609 yield st |
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
610 |
43076
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formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42562
diff
changeset
|
611 |
7890
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
612 def getuser(): |
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
613 '''return name of current user''' |
32129
f0ea0f642627
py3: make posix.getuser return a bytes
Pulkit Goyal <7895pulkit@gmail.com>
parents:
31539
diff
changeset
|
614 return pycompat.fsencode(getpass.getuser()) |
7890
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
615 |
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parents:
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changeset
|
616 |
7890
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util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
617 def username(uid=None): |
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
618 """Return the name of the user with the given uid. |
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
619 |
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
620 If uid is None, return the name of the current user.""" |
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
621 |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
622 if uid is None: |
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
623 uid = os.getuid() |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
624 try: |
38252
a4aa77b84efd
py3: make sure util.username() always returns bytes
Pulkit Goyal <7895pulkit@gmail.com>
parents:
38166
diff
changeset
|
625 return pycompat.fsencode(pwd.getpwuid(uid)[0]) |
7890
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
626 except KeyError: |
38252
a4aa77b84efd
py3: make sure util.username() always returns bytes
Pulkit Goyal <7895pulkit@gmail.com>
parents:
38166
diff
changeset
|
627 return b'%d' % uid |
7890
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util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
628 |
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changeset
|
629 |
7890
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
630 def groupname(gid=None): |
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
631 """Return the name of the group with the given gid. |
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
632 |
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
633 If gid is None, return the name of the current group.""" |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
634 |
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
635 if gid is None: |
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
636 gid = os.getgid() |
e710f0f592b2
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Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
637 try: |
41827
faa04f45b5fe
py3: make sure return value of posix.groupname() is bytes
Pulkit Goyal <pulkit@yandex-team.ru>
parents:
41523
diff
changeset
|
638 return pycompat.fsencode(grp.getgrgid(gid)[0]) |
7890
e710f0f592b2
util: split out posix, windows, and win32 modules
Matt Mackall <mpm@selenic.com>
parents:
diff
changeset
|
639 except KeyError: |
41827
faa04f45b5fe
py3: make sure return value of posix.groupname() is bytes
Pulkit Goyal <pulkit@yandex-team.ru>
parents:
41523
diff
changeset
|
640 return pycompat.bytestr(gid) |
10237
2f7a38f336f4
serve: add and use portable spawnvp replacement
Patrick Mezard <pmezard@gmail.com>
parents:
10218
diff
changeset
|
641 |
43076
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formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42562
diff
changeset
|
642 |
11138
99eee847beaa
acl: grp module is not available on windows
Patrick Mezard <pmezard@gmail.com>
parents:
11011
diff
changeset
|
643 def groupmembers(name): |
99eee847beaa
acl: grp module is not available on windows
Patrick Mezard <pmezard@gmail.com>
parents:
11011
diff
changeset
|
644 """Return the list of members of the group with the given |
99eee847beaa
acl: grp module is not available on windows
Patrick Mezard <pmezard@gmail.com>
parents:
11011
diff
changeset
|
645 name, KeyError if the group does not exist. |
99eee847beaa
acl: grp module is not available on windows
Patrick Mezard <pmezard@gmail.com>
parents:
11011
diff
changeset
|
646 """ |
41523
3ef8bec91465
py3: do a fsdecode(), fsencode() dance in posix.py
Pulkit Goyal <pulkit@yandex-team.ru>
parents:
41504
diff
changeset
|
647 name = pycompat.fsdecode(name) |
3ef8bec91465
py3: do a fsdecode(), fsencode() dance in posix.py
Pulkit Goyal <pulkit@yandex-team.ru>
parents:
41504
diff
changeset
|
648 return pycompat.rapply(pycompat.fsencode, list(grp.getgrnam(name).gr_mem)) |
11138
99eee847beaa
acl: grp module is not available on windows
Patrick Mezard <pmezard@gmail.com>
parents:
11011
diff
changeset
|
649 |
43076
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Augie Fackler <augie@google.com>
parents:
42562
diff
changeset
|
650 |
10237
2f7a38f336f4
serve: add and use portable spawnvp replacement
Patrick Mezard <pmezard@gmail.com>
parents:
10218
diff
changeset
|
651 def spawndetached(args): |
43076
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parents:
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diff
changeset
|
652 return os.spawnvp(os.P_NOWAIT | getattr(os, 'P_DETACH', 0), args[0], args) |
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42562
diff
changeset
|
653 |
10237
2f7a38f336f4
serve: add and use portable spawnvp replacement
Patrick Mezard <pmezard@gmail.com>
parents:
10218
diff
changeset
|
654 |
10239
8e4be44a676f
Find right hg command for detached process
Patrick Mezard <pmezard@gmail.com>
parents:
10237
diff
changeset
|
655 def gethgcmd(): |
8e4be44a676f
Find right hg command for detached process
Patrick Mezard <pmezard@gmail.com>
parents:
10237
diff
changeset
|
656 return sys.argv[:1] |
11010
18e81d42ee5c
util: fix default termwidth() under Windows
Patrick Mezard <pmezard@gmail.com>
parents:
10264
diff
changeset
|
657 |
43076
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parents:
42562
diff
changeset
|
658 |
14908
e2b5605501df
util: move "default" makedir to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14273
diff
changeset
|
659 def makedir(path, notindexed): |
e2b5605501df
util: move "default" makedir to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14273
diff
changeset
|
660 os.mkdir(path) |
14909
c627fe32c923
util: move "default" unlinkpath to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14908
diff
changeset
|
661 |
43076
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formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42562
diff
changeset
|
662 |
14910
570ea0259b0a
util: move "default" lookupreg to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14909
diff
changeset
|
663 def lookupreg(key, name=None, scope=None): |
570ea0259b0a
util: move "default" lookupreg to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14909
diff
changeset
|
664 return None |
14911
5b39503157fd
util: move "default" hidewindow to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14910
diff
changeset
|
665 |
43076
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parents:
42562
diff
changeset
|
666 |
14911
5b39503157fd
util: move "default" hidewindow to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14910
diff
changeset
|
667 def hidewindow(): |
5b39503157fd
util: move "default" hidewindow to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14910
diff
changeset
|
668 """Hide current shell window. |
5b39503157fd
util: move "default" hidewindow to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14910
diff
changeset
|
669 |
5b39503157fd
util: move "default" hidewindow to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14910
diff
changeset
|
670 Used to hide the window opened when starting asynchronous |
5b39503157fd
util: move "default" hidewindow to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14910
diff
changeset
|
671 child process under Windows, unneeded on other systems. |
5b39503157fd
util: move "default" hidewindow to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14910
diff
changeset
|
672 """ |
5b39503157fd
util: move "default" hidewindow to posix.py
Adrian Buehlmann <adrian@cadifra.com>
parents:
14910
diff
changeset
|
673 pass |
14926
4e7e63fc685a
util: eliminate wildcard imports
Adrian Buehlmann <adrian@cadifra.com>
parents:
14911
diff
changeset
|
674 |
43076
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formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents:
42562
diff
changeset
|
675 |
14927
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
676 class cachestat(object): |
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
677 def __init__(self, path): |
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
678 self.stat = os.stat(path) |
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
679 |
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
680 def cacheable(self): |
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
681 return bool(self.stat.st_ino) |
2aa3e07b2f07
posix, windows: introduce cachestat
Idan Kamara <idankk86@gmail.com>
parents:
14926
diff
changeset
|
682 |
15791
a814f8fcc65a
Use explicit integer division
Martin Geisler <mg@aragost.com>
parents:
15711
diff
changeset
|
683 __hash__ = object.__hash__ |
a814f8fcc65a
Use explicit integer division
Martin Geisler <mg@aragost.com>
parents:
15711
diff
changeset
|
684 |
14927
2aa3e07b2f07
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Idan Kamara <idankk86@gmail.com>
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685 def __eq__(self, other): |
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686 try: |
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687 # Only dev, ino, size, mtime and atime are likely to change. Out |
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688 # of these, we shouldn't compare atime but should compare the |
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689 # rest. However, one of the other fields changing indicates |
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690 # something fishy going on, so return False if anything but atime |
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691 # changes. |
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692 return ( |
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693 self.stat.st_mode == other.stat.st_mode |
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694 and self.stat.st_ino == other.stat.st_ino |
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695 and self.stat.st_dev == other.stat.st_dev |
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696 and self.stat.st_nlink == other.stat.st_nlink |
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697 and self.stat.st_uid == other.stat.st_uid |
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698 and self.stat.st_gid == other.stat.st_gid |
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699 and self.stat.st_size == other.stat.st_size |
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700 and self.stat[stat.ST_MTIME] == other.stat[stat.ST_MTIME] |
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701 and self.stat[stat.ST_CTIME] == other.stat[stat.ST_CTIME] |
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702 ) |
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703 except AttributeError: |
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704 return False |
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705 |
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706 def __ne__(self, other): |
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707 return not self == other |
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708 |
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709 |
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710 def statislink(st): |
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711 '''check whether a stat result is a symlink''' |
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712 return st and stat.S_ISLNK(st.st_mode) |
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713 |
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714 |
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715 def statisexec(st): |
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716 '''check whether a stat result is an executable file''' |
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717 return st and (st.st_mode & 0o100 != 0) |
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718 |
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719 |
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720 def poll(fds): |
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721 """block until something happens on any file descriptor |
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722 |
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723 This is a generic helper that will check for any activity |
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724 (read, write. exception) and return the list of touched files. |
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725 |
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726 In unsupported cases, it will raise a NotImplementedError""" |
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727 try: |
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728 while True: |
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729 try: |
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730 res = select.select(fds, fds, fds) |
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731 break |
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732 except select.error as inst: |
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733 if inst.args[0] == errno.EINTR: |
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734 continue |
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735 raise |
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736 except ValueError: # out of range file descriptor |
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737 raise NotImplementedError() |
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738 return sorted(list(set(sum(res, [])))) |
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739 |
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740 |
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741 def readpipe(pipe): |
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742 """Read all available data from a pipe.""" |
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743 # We can't fstat() a pipe because Linux will always report 0. |
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744 # So, we set the pipe to non-blocking mode and read everything |
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745 # that's available. |
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746 flags = fcntl.fcntl(pipe, fcntl.F_GETFL) |
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747 flags |= os.O_NONBLOCK |
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|
748 oldflags = fcntl.fcntl(pipe, fcntl.F_SETFL, flags) |
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749 |
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750 try: |
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|
751 chunks = [] |
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752 while True: |
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753 try: |
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754 s = pipe.read() |
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|
755 if not s: |
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parents:
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|
756 break |
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|
757 chunks.append(s) |
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758 except IOError: |
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|
759 break |
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760 |
43077
687b865b95ad
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parents:
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|
761 return b''.join(chunks) |
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parents:
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|
762 finally: |
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parents:
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763 fcntl.fcntl(pipe, fcntl.F_SETFL, oldflags) |
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|
764 |
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765 |
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parents:
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diff
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|
766 def bindunixsocket(sock, path): |
3239e2fdd2e2
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diff
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|
767 """Bind the UNIX domain socket to the specified path""" |
3239e2fdd2e2
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changeset
|
768 # use relative path instead of full path at bind() if possible, since |
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chgserver: extract utility to bind unix domain socket to long path
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parents:
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769 # AF_UNIX path has very small length limit (107 chars) on common |
3239e2fdd2e2
chgserver: extract utility to bind unix domain socket to long path
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|
770 # platforms (see sys/un.h) |
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parents:
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diff
changeset
|
771 dirname, basename = os.path.split(path) |
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Yuya Nishihara <yuya@tcha.org>
parents:
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772 bakwdfd = None |
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Matt Harbison <matt_harbison@yahoo.com>
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diff
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773 |
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posix: avoid a leaked file descriptor in a unix domain socket exception case
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diff
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|
774 try: |
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parents:
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diff
changeset
|
775 if dirname: |
87c35b5a14eb
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parents:
45717
diff
changeset
|
776 bakwdfd = os.open(b'.', os.O_DIRECTORY) |
87c35b5a14eb
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|
777 os.chdir(dirname) |
87c35b5a14eb
posix: avoid a leaked file descriptor in a unix domain socket exception case
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parents:
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diff
changeset
|
778 sock.bind(basename) |
87c35b5a14eb
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parents:
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diff
changeset
|
779 if bakwdfd: |
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Matt Harbison <matt_harbison@yahoo.com>
parents:
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diff
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780 os.fchdir(bakwdfd) |
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parents:
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diff
changeset
|
781 finally: |
87c35b5a14eb
posix: avoid a leaked file descriptor in a unix domain socket exception case
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parents:
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diff
changeset
|
782 if bakwdfd: |
87c35b5a14eb
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parents:
45717
diff
changeset
|
783 os.close(bakwdfd) |